I'm currently running a geocoding function (using the google_places
function in the googleway
package). The function will run for a while (I have almost 3k locations), then throw the following error:
Error in open.connection(con, "rb") :
schannel: next InitializeSecurityContext failed: SEC_E_ILLEGAL_MESSAGE (0x80090326) - This error usually occurs when a fatal SSL/TLS alert is received (e.g. handshake failed). More detail may be available in the Windows System event log.
Having consulted the system event log, I found the following information:
The machine-default permission settings do not grant Local Activation permission for the COM Server application with CLSID
{9BA05972-F6A8-11CF-A442-00A0C90A8F39}
and APPID
{9BA05972-F6A8-11CF-A442-00A0C90A8F39}
I'm not really sure what to do with this information. From my limited knowledge, it appears this is some sort of security/firewall issue. How should I go about giving R the permissions needed to run this function?
I am running Windows 10 with Windows Defender as antivirus/firewall. For reference, this is the function I am using for geocoding:
metro.locater <- function(lat, lon){
library(googleway)
#putting latitude and longitude into the same vector
latlon <- c(lat, lon)
#getting places result
res <- google_places(location = latlon,
place_type = "subway_station", radius = 50000,
rankby="distance",
key = "myKey")
#condition handling
if(res$status == 'OK'){
closest <- res$results[1:3, ]
return(closest)} else {
try(return(res$status))
}
}
I was able to fix the issue by using an adverb I'd used with another geocoding function that attempts to run the function 5 times when it fails to provide results. Given that this worked, it seems likely that this was just a transient error rather than a systemic issue.
The adverb I used:
safely <- function(fn, ..., max_attempts = 5) {
function(...) {
this_env <- environment()
for(i in seq_len(max_attempts)) {
ok <- tryCatch({
assign("result", fn(...), envir = this_env)
TRUE
},
error = function(e) {
FALSE
}
)
if(ok) {
return(this_env$result)
}
}
msg <- sprintf(
"%s failed after %d tries; returning NULL.",
deparse(match.call()),
max_attempts
)
warning(msg)
NULL
}
}
Taken from Repeating values in loop until error disappears.
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